THEORETICAL MODELLING AND NUMERICAL SIMULATION ON INFRARED EXTINCTION FOR CARBON NANOFIBRES

摘要

Carbon nanofibre is a new kind of materials with good capability of electromagnetic wave absorption. To explore the infrared extinction performance of carbon nanofibres as smoke particle in passive interference, based on the electromagnetic field theory, the integral equation model of induced current for carbon nanofibres is established. The method of Moment is used to solve the integral equation and the formulae of scattered field, absorption and scattering cross section of carbon nanofibres are derived. The relationships between infrared extinction cross section of carbon nanofibre and the angle of incidence, the fibre length, the wavelength and diameter are analysed and simulated. The simulation results show that the method is valuable and provides a theoretical basis for the application of nanocarbon fibre in infrared smoke interference.